Force-pump.



No. 766,734. PATENTED AUG. 2, 1904. G. SCHELLHAMMBR.

FORCE PUMP.

APPLICATION FILED JAN. 16. 1904.

no monm. 2 SHEETS-SHEET 1.

( n ucuto:

PATENTED AUG, 2 1904.

0. SGHBLLHAMMBR.-

FORGE PUMP.

APPLICATION rum) JAN. 16. 1904.

2 SHEETS-SHEET 2.

N0 MODEL.

m Linuenfoz 656%- (-PZZ7Z677777767} UNITED STATES Patented August 2, 1904.

PATENT OFFICE.

FORCE-PUMP.

SPECIFICATION forming part of Letters Patent No. 766,734, dated August 2, 1904.

Application filed January l6,1904. Serial No. 189,356. (No model.)

To (1, 111/107 it may concern:

Be it known that I, CHRISTIAN SCIIELLHAM- Man, a citizen of the United States, residing at \Yarren, in the county of \Varren and State of Pennsylvania, have invented new and useful hnprovements in Force-Pumps, of which the following is a specification.

This invention relates to improvements in force and suction pumps of that style and kind used by plumbers for forcing or drawing accumulated stoppages and impediments from sink-traps, sewer-pipes, washbasins, bath-tub waste-pipes, and water closets and pipes; and the object is to provide an implement of simple construction which is adapted to etliciently perform the work required either by direct pressure or by suction.

The improvements embody a force-pump and a reversible cup adapted to operate on a surface over an aperture or in an opening.

The invention also resides in a force-pump, a reversible cup thereon adapted to operate on a surface over an aperture in an opening, and a laterally-projecting cup adapted toset over and close a vent to prevent escape of the applied pressure or suction.

In the drawings, Figure 1 is a perspective view of the complete implement, showing both the base-cup and the lateral cup applied thereto. Fig. 2 is a vertical central view through the barrel and the base-cup and longitudinal vertical section through the lateral cup and its holder or socket. Fig. 3 is a detail view, partly in vertical central section, showing the base-cup in a position reverse to that indicated in Figs. 1 and 2.

Similar characters of reference are employed to indicate corresponding parts in the several views.

A designates the barrel or cylinder of the implement, consisting of a sheet-metal cylinder of such length and diameter as may be required to suit the implement to the uses required. The cylinder may be strengthened at its open end by a suitable flange or bead 1 of the usual character. The lower end portion of the cylinder is reduced and terminates in a tubular extension 2 of such length and diameter as desired and found necessary for different applications. In the cylinder or barrel is fitted a plunger or piston 3, provided with a rod 4, on the end of which is a handle 5.

B designates a reversible elastic cup and plug, made of rubber of such size as may suit it to set over the strainer-plate of a sink and similar devices. The body of the cup is made bell-shaped, pear-shaped, or conical, as shown, and the rim portion is bifurcated, as at 5, forming annular lips or parts 6 and 7, which are curved in reverse or opposite directions, as shown, so that when the cup is used in sinks or similar places it completely covers the strainer, and when the plunger is drawn up the outer lip 6 will be drawn tight against the surface of the sink and a vacuum created in the hollow of the cup, thereby tending to disturb and suck or draw up the impeding material, and then when the plunger is forced down the inner lip 7 is forced down tight on the strainer-plate or surface of the sink, forcing the already -loosened material out through the trap and down the pipe. From the base of the cup and extending centrally through the neck is a bore or passage 8 to snugly receive the tube 2, so that when the cup is to be used for cleaning out the pipes of bath-tubs, washbasins, and other fixtures where the outlets are small the cup may be removed from the tube, reversed, and then positioned thereon with the tapering neck 8 down. Then the neck ofthe cup constitutes a plug and is placed in an outlet or escape orifice and the plunger operated to dislodge and eject the impeding substance. The reverse arrangement and position of the cup in this operation is shown in Fig. 3 of the drawings.

9 designates a flat split ring adjustably arranged on the cylinder and secured by a binding or clamping screw 10, let through ears, as shown in the drawings. The ends 11 of the ring opposite those engaged by the screw 10 are drawn closely together and embraced by a pair of slotted arms 12, projecting from the center of a rubber cup 13, said arms and ends 11 being engaged by a clamping-screw and nut 13. This cup serves to set over the overflow of bath-tubs, Sac. ,when pressure on the pumps 1s applied to fixtures where overflows are used 1n connection with wastepipes, the slotted Y shaped cup detachably and reversibly applied to the said extension and having the flared end formed with reversely-extending annular lips and the reduced end shaped as a plug and adapted to be inserted in outlet-openings.

2. The combination of a force-pump having the lower end reduced and terminating in a tubular extension, a suction holding means adju'stably mounted on the body of the pump, and an elastic cup detachably and reversibly applied to said extension and having a flared open extremity with reversely-extending annular edge lips, the opposite extremity of the cup being reduced and shaped to form a plug adapted to be inserted in outlet-openings, the cup being freely removable from and applicable to the extension of the pump.

In testimony whereof I affix my signature in presence of two Witnesses.

CHRISTIAN SOHELLHAMMER. Witnesses:

GEO. H. JACKSON, G. B. NESMITH. 

